Unlike C++, an object destructor is nearly never needed in Perl, and even when it is, explicit invocation is uncalled for. In the case of our Person class, we don't need a destructor because Perl takes care of simple matters like memory deallocation.

I quite disagree. GC is great for memory, but doesn't do a thing for other resources such as window handles. If an object represents a window, the object being destructed closes the window. Do you want the window to stay visible until the system notices it can collect it, or promptly when the last reference is dropped?